激励频率对失谐叶盘频响特性的影响

The blisk forced response analysis method combining fundamental mistuning model (FMM)， influence coefficient method， and modal superposition method was adopted. Considering the influence of aerodynamic damping，the method was used to study the frequency response characteristics of various mistuning blisks under traveling wave excitation. The influence of traveling wave excitation frequency on the forced responses of mistuning blisks was summarized by analyzing the frequency response curves of different mistuning blisks. The results showed that the forced response of tune blisk generally increased after the superposition of random mistuning under traveling wave excitation in typical frequency range，and there was a “response jump” near the peak. After further superposition of alternating mistuning， the forced response significantly decreased， and frequency response curves exhibited “multi peak” and “response jump”.